How do I get subwoofer working on D945GCLF motherboard?

I got the Intel D945GCLF and cannot figure out how to flip the microphone in port on the board to be a LFE (subwoofer) out port like I did with my old M10000. Has anyone done this? I installed every updated driver, all the audio drivers and I have 4 channel sound right now. I just cannot get 4.1 sound going.....I'll even settle for 2.1, I just want the subwoofer. Anyone know how to get this board to flip the microphone port to LFE?

To get the sub/center to work on the intel you have to have all three ports used in the back. Unlike my desktop board the intel would not let me select which one was which. So I just used two ports to be the front and rear for my 4 channel amp and the last to be the sub channel on my factory amps. I have to use a front panel connection for the line in/mic

General Description
The ALC662 is a 5.1 Channel High Definition Audio Codec designed for Windows Vista desktop and mobile PCs. Its performance and functionality meet Microsoft Windows Vista (WLP 3.08) premium requirements. The ALC662 features three stereo DACs, two stereo ADCs, and legacy analog input to analog output mixing, to provide a fully-integrated audio solution for multimedia PC systems.

All analog IO (except CD-IN and PCBEEP) are input and output capable, and three headphone amplifiers are also integrated to drive earphones on front (port-E and port-F) and rear panel (port-D).

The ALC662 supports 16/20/24-bit S/PDIF output function and a sampling rate of up to 96kHz. It offers easy connection of PCs to high quality consumer electronic products such as digital decoders and speakers.

The ALC662 supports host/soft audio from the Intel ICH series chipset, and also from any other HDA compatible audio controller. With EAX/Direct Sound 3D/I3DL2/A3D compatibility, and excellent software utilities like Karaoke mode, environment emulation, software equalizer, HRTF 3D positional audio, and optional Dolby® Digital Live, DTS® CONNECT™, and Dolby® Home Theater programs, the ALC662 provides an excellent home entertainment package and game experience for PC users.

My application (realtek sound control app) has a subwoofer control. You might check the bios to see if there is an option to select the sound card mode. I'll get some more details on mine and post back.